I would really like some help with categorizing the cupcakes in my gallery. So if any of the cupcakes I have are in the wrong category or I don't have a category it should be in made yet just let me know. I would really like to get most of the cupcakes categorized by holidays.

Subetalodge is a fansite that has an Item Database. The Advanced feature has an Item Notes section which will help you categorize your cupcakes. It also has the ability to sort by rarity.

And IMO that is begging and you should edit your post.

I think you should have an "Other Holidays" category for things like the Mothers Day cupcakes. Otherwise yeah, I would make a Subetalodge account, and make a custom checklist that searches for "cupcake" so you can easily tell which ones you still need, and then if you click on them they should tell you where they come from.